A Normalization Circuit Underlying Coding of Spatial Attention in Primate Lateral Prefrontal Cortex.

This effect was highly significant for both the ipsilaterally-tuned population ( t test, t (68) = 5.5, p = 6.2 × 10 −7 ) o and contralaterally-tuned population ( t test, t (162) = 7.15, p = 2.8 × 10 −11 ). p We found that attend in responses of contralateral neurons, but not ipsilateral neurons, were better described by a WTA model (a linear regression slope of 1 signifies a WTA response; Fig. 6 B ).

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However, we found a trend for a larger proportion of ipsilateral tuned neurons to be purely inhibited, and an opposite trend of a higher proportion of contralateral neurons to be purely excited that did not reach statistical significance (χ 2 test p = 0.09 g ).

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